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Test Code CSF Pr CSF, Protein

Aliases

CSF Total Protein

Patient Preparation

No special patient preparation required

Special Collection Instructions

Transport to lab as soon as possible

Collection Method

Lumbar puncture or CSF shunt

Minimum Volume

  • Adults: 0.5 ml
  • Pediatric: 0.4 ml

Container

Sterile CSF Tube

Preferred Specimen

Sterile CSF Tube

Acceptable Specimens

  • Sterile CSF Tube
  • Sterile Urine Cup

Reference or Target Ranges

15 – 45 mg/dL

Reportable Units

mg/dL

Critical Value

0 – 1 year >300 mg/dL
>1 year >150 mg/dL

Reasons for Rejection



<!-- Rejection-->
Hemolysis Threshold
 500 mg/dL
Icterus Threshold
 20 mg/dL
Lipemia Threshold
 3000 mg/dL
Other
 QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability



<!-- Stability -->
Ambient
 24 hours
Refrigerated (4°C to 8°C)
 6 days
Frozen(-40°C to 0°C)
 1 year

Performance Information



<!-- Performance information -->
Days and Time Performed
 24/7
Expected Turn Around Time
 Stat: 1 hour
Routine: 4 hours
Stat Availabilty
 Yes
Performing Bench
 UH Chemistry, WCH Chemistry
Methodology/Method Description
 Roche Cobas – Turbidimetric method

CPT Codes

84157